Golf ball



Patented July 14, 1925.

UNITED STATES PATENT OFFICE.

ALBERT E. I' ENFOLD, 0F BIRMINGHAM, ENG-LAND, ASSIGNOR TO DUNLOIP TIRE AND RUBBER CORPORATION OF AMERICA, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

GOLF BALL.

No Drawing.

To all whom it may concern:

Be it known that I, ALBERT ERNEST PEN- FOLD, a subject of Great Britain, and resident of Birmingham, England, have invented certain new and useful Improvements in Golf Balls, of which the following is a specification.

This invention relates to improvements in golf balls and its object is to provide an improved composition and structure and pargcfilarly an improved center or core for such According to this invention we provide a golf ball having its center or core comprising, that is composed wholly or partly of, a mixture of rubber with resin. A good example of such a core can be madeup of a suitable quantity of unvulcanized india rubbcr mixed with a quantity of resinous oil which is extracted from'raw balata and generally known as balata resin preferably in the proportion of two and one-half parts by the known methods.

weight, of balata resin to rubber.

The mixing may be carried out by any'of Suitable filling and vulcanizing ingredients are added. An ex? ample of a compound suitable for our purpose is as follows:

one of india Parts by weight. Para rubber 12 Balata resin Litharge Sulphur 2 Application filed May 17, 1924; Serial No. 714,183.

The gelatine solution is preferably composed as follows:

G 1 t Parts by weight. e a me A l1 Glycerine 5 Water 84:

The solution may be applied to the core by dipping or any other known means. The remainder of the ball may be built up upon the core in any known manner, for example, strips of rubber tape may be wound thereuponand an outer cover molded thereon in the-ordinary way.

Though I have described with great particularity of detail a certain embodiment of my invention, yet it is not to be understood therefrom that the inventionis restricted to the particular embodiment disclosed. Various modifications thereof in detail may be made by those skilled in the art without departure from the invention as defined in the following claims.

What I claim is:

1. A golf ball having'a center comprising india rubber mixed with resinous oil extracted from balata, the center being vulcanized before the remainder of the ball is built thereon. I

2. A golf ball as in claim 1, the proportion of the resinous oil to india rubber being approximately two and a half parts to one by weight.

3. A golf ball as in claim l, with a thin coating of a gelatinous substance surrounding the center to prevent the resinous oil from escaping into the remainder of the ball. 

